Central Limit Theorem: Review is part of the collection col10555 written by Barbara Illowsky and Susan Dean. The module consists of review exercises.
The next three questions refer to the following information: Richard’s Furniture Company delivers furniture from 10 A.M. to 2 P.M. continuously and uniformly. We are interested in how long (in hours) past the 10 A.M. start time that individuals wait for their delivery.
~
A
The average wait time is:
1 hour
2 hour
2.5 hour
4 hour
B
Suppose that it is now past noon on a delivery day. The probability that a person must wait at least
more hours is:
A
Given:
.
Find
Calculate the minimum value for the upper quartile.
Find
0.7165
4.16
0
40% of full-time students took 4 years to graduate
30% of full-time students took 5 years to graduate
20% of full-time students took 6 years to graduate
10% of full-time students took 7 years to graduate
The expected time for full-time students to graduate is:
4 years
4.5 years
5 years
5.5 years
C
Which of the following distributions is described by the following example?
Many people can run a short distance of under 2 miles, but as the distance increases, fewer people can run that far.
Binomial
Uniform
Exponential
Normal
C
The length of time to brush one’s teeth is generally thought to be exponentially distributed with a mean of
minutes. Find the probability that a randomly selected person brushes his/her teeth less than
minutes.
0.5
0.43
0.63
D
Which distribution accurately describes the following situation?
The chance that a teenage boy regularly gives his mother a kiss goodnight (and he should!!) is about 20%. Fourteen teenage boys are randomly surveyed.
the number of teenage boys that regularly give their mother a kiss goodnight
A
Which distribution accurately describes the following situation?
A 2008 report on technology use states that approximately 20 percent of U.S. households have never sent an e-mail. (source: http://www.webguild.org/2008/05/20-percent-of-americans-have-never-used-email.php) Suppose that we select a random sample of fourteen U.S. households .
the number of households in a 2008 sample of 14 households that have never sent an email
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
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Source:
OpenStax, Collaborative statistics (custom online version modified by t. short). OpenStax CNX. Jul 15, 2013 Download for free at http://cnx.org/content/col11476/1.5
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